Driving and stopping mechanism



E. I. RAY.

DRIVING AND STOPPING MECHANISM.

APPLICATION FILED SEPT- I9. I914.

I I. 93,06 1. Patented Aug. 1, 1916.

3 SHEETSSHEET I.

E. J. RAY.

DRIVING AND STOPPING MECHANISM APPLICATION FILED SEPT- 19. 1914.

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E. I. RAY.

DRIVING AND STOPPING MECHANISM.

APPLICATION FILED SEPT 19, IBM.

Patented Aug. 1, 1916.

3 SHEETS-SHEET 3.

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EUGENE J. BAY, OF BEVERLY, MASSACHUSETTS, 'ASSIGNOR TO UNITED SHOEMACHINERY COMPANY, OF PATEBSON, NEW JERSEY, A CORPORATION OF NEVT JEESEY.

Specification of Letters Patent.

DRIVING AND STOPPING MECHANISM.

Patented Aug. 1, 1916.

Application filed September 19, 1914. Serial No. 862,490.

To all whom it may concern.-

zen of the United States, residing at Be erly, in the county of Essexand State of Massachusetts, have invented certain new and usefulImprovements in Driving and Stopping Mechanism; and I do hereby declarethe following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

The present invention relates to driving and stopping mechanismparticularly applicable to buttonhole sewing machines, but also capableof use in other relations.

In the drawings hereinafter specifically described a preferred form ofthe invention is embodied in the buttonhole machine fully illustratedand described in the patent to Hill, No. 1,063,880, June 3, 1913. Inthat machine two driving mechanisms are pro-- vided, one acting whilethe sewing mechanism is at rest to rotate the cam carrying actuating andcontrolling gear and the other acting-during the sewing of thebuttonhcle to rotate the cam carrying gear and also in which thismechanism is mounted is thrown out of operation it is entirelydisconnected from the cam carrying gear so that the gear in itscontinued rotation has no control over the mechanism for actuating androtating the sewing mechanism and it tated into such a position as torelease the clutch actuating devices, and also in case the startinglever is kept depressed by the operator the machine will not stop at thecompletion of a cycle of operations, but will continue to operate solong as the lever is held depressed.

In applying the various features of the present invention to the machineof the Hill patent a driving mechanism has been embodied in the machinewhich comprises c0nnectlons between the cam carrying gear and themechanism for actuating and rotating the sewing devices which look themechanism for actuating and rotating the sewing devlcesagainstdisplacement with relation to the cam carrying gear so that thismechanism can not be turned either intentionally or accidentally so asto get it out of the proper timed relation to the mechanism foractuating the other parts of the machine. A lso clutch actuating andcontrolling devices have been embodied in the machine by which themachine can be started regardless of the exact position of the camcarrying gear and'by which the machine will be prevented from makingmore than one complete cycle of operations, whether or not the startinglever is kept depressed. It will be understood, however, that while thespecific embodiment of the invention is particularly applicable tobutton-hole sewing machines of the type disclosed in the Hill patent,the several features of the invention are not limited to use in anyparticular type of machine, nor except as defined in the claims are theylimited to any specific construction and arrangement of parts. 1

Referring now to the drawings; Figure 1 is a view in sectional elevationof so much of the buttonhole sewing machine of Hill Patent No. 1,063,880as is necessary to show the connection of the present inventiontherewith; Fig. 2 is a detail sectional plan view of the cam carryinggear and its driving mechanism; Fig. 3 is a detail view in sideelevation of the clutch controlling devices of the mechanism for drivingthe cam carrying gear independently; and Figs. 1, 5 and 6 are viewssimilar to Fig. 3 showing the parts in different positions.

The upper needle of the machine is indicated at 1 and the lower needl at2. The upper needle is eccentrically mounted in a bar 3 whichreciprocates through a rotary nd continuously rotating driving shaft 16head mounted in the overhanging frame 4 of the machine. The lowerneedle, together with the devices which cooperate therewith in handlingthe lower thread is mounted in a rotary turret 5 supported in the baseof the machine. The sewing devices, including the upper and lowerneedles 1 and 2, are actuated through suitable connections from thedriving shaft 6 and the sewing devices are rotated through suitableconnections from the rotary gear 7, all as fully-illustrated anddescribed in the patent to Hill above referred to. The button holecutting lever of the machine is indicated at 8 and is actuated as in themachine of the Hill patent through a pivoted lever from a cam on the camcarrying gear 9. The work clamps 10 of the machine are mounted upon aclamp carriage 11 and these clamps and carriage are actuated and movedas in the machine of the Hill patent, the clamp being closed at thebeginning of the cycle of operations of the machine by the movement .ofthe cutter lever, and the clamp carriage being moved longitudinally atthe beginning and end of the sewing operation and also during the sewingoperation by suitable connections from the cam carrying gear 9. The gear7 from which the sewing devices are rotated is driven as inthe machineof the Hill patent through a pinion 12 at the lower end of a verticalshaft 13 which is connected at its upper end through a universal jointto a vertical shaft 14 carrying at itsupper enda worm gear 15 meshingwith a worm on the driving shaft 6. For driving the cam carrying gear 9independently of the gear 7 and the mechanism for actuating the stitchforming devices a secactuating the sewing devices remain at rest.

After the gear 9 has made a part of a revolution the mechanism forindependently driving the gear is thrown out of operation and themovement of the gear is continued through connections to the mechanismfor rotating the gear 7 and actuating the stitch forming devices, themechanism for rotating the gear 7 and actuating the stitch formingdevices being thrown into operation simul taneously with the throwingout of the mechanism for independently driving the cam carrying gear.The connections for driving the cam carrying gear 9 from the mechanismfor actuating and rotating the stitch forming devices comprises a pinion18 fast on the shaft 13 and arranged to mesh with the cam carrying gear9. To enable the mechanism for actuating and rotating the stitch formingdevices to remain stationary during a portion of the revolution of thecam carrying gear the periphery of the gear is provided with a blankspace 19 arranged to register with the pinion 18 while the cam carryinggear is being driven independently, and in order to lock the mechanismfor actuating and rotating the stitch forming devices againstdisplacement while the cam carrying gear is being driven independentlythe pinion 18 is provided at its lower end with a locking segment 20 andthe cam carrying gear 9 is provided with a cooperating locking plate 21.The locking plate 21 is in engagement with the locking segment 20 whilethe cam carrying gear is being driven independently and is out ofengagement therewith while the cam carry- Ling gear is being driven bythe pinion 18. The vmechanism for actuating and rotating the stitchforming devices is thus connected at all times to the cam carrying gear9 and by no possibility can the timed relation of this mechanism withrelation to the cam carrying gear be altered, either intentionally oraccidentally.

The connections between the worm gear 17 and the cam carrying gear 9 fordriving the cam carrying gear independently comprise a clutch member 22mounted to rotate and slide longitudinally on the shaft 13, a clutchmember 23 formed on the worm gear 17 arranged to cooperate with theclutch member 22, and a pinion 21 fast on the clutch member 22 andmeshing with the cam carrying gear 9. Upward movement of the clutchmember 22 brings it into engagement with the'clutch member withoutraising pinion 24 high enough to disengage the teeth of cam carryinggear 9, and thus connects the cam carrying gear to the shaft 16 so thatit is driven from this shaft. Downward movement of the clutch member 22disconnects the cam carrying gear from the driving shaft 16 and leavesthe clutch member 22 and pinion 24 free to be rotated idly by the camcarrying gear 9 while it is being driven by the pinion 18.

As is fully described in the patent to Hill above referred to thedriving shaft 6 is driven through a clutch which is opened and closed bymechanism including a clutch shifting rod which is controlled by a camon the cam carrying gear 9. This cam is indicated at 25 on Fig. 2 of thedrawings. Also as is fully described in the Hill patent the shaft 6 isbrought to rest when its driving clutch is opened by means of a brakewith two cams indicated at 29 and on Fig. 2. These cams are arranged toact upon a clu ch shiftmg lever which moves the clutch member 22 of themechanism tor t independently driving the cam carrying gear into and outof engagement with the clutch member 23. The cam 29 acts upon the clutchshifting lever to stop the machine at the completion of the cycle ofoperations while the cam 30 actuates the clutch shifting lever to movethe clutch member 22 out of engagement with the clutch member 23 just asthe cl uteh for driving the shaft 6 is closed and holds the clutchmember 22 out of engagement with the clutch member 23 until the clutchon shaft 6 is opened, at which time the cam 30 releases the clutchactuating lever and allows the clutch member 22 to again engage theclutch member 23. The clutch shifting lever for shifting the clutchmember 22 is made in two parts indicated at 31 and 32, see particularlyFigs. 3 to 6, inclusive. These parts are pivotally mounted upon pivotpin 33 and are arranged to be locked together by means of a latch 34pivotally mounted upon an arm projecting downwardly from the part 31 andarranged to engage a lateral projection 35 from an arm projecting dwnwardly from the part 32. A compression spring 36 acting on the outerend of part 31 tends to force the clutch member 22 upwardly intoengagement with the clutch member 23,; while a compression spring 37interposed between the lug on part 31 and the latch 34c presses thelatch 34; downwardly against the projection 35. The latch 3-1 isarranged to be engaged by a trip dog 38 pivotally mounted upon the rearend of the starting lever 39. The trip dog 33 when the machine is atrest with the parts in stopped position is held in engagement with theend of latch 34 by means of a compression spring 40 interposed between alug on the starting lever and the trip dog. Movement of the trip dogunder the force of the spring re is limited by cooperating lugs on thestarting lever and on the upper end of the trip dog.

The construction of clutch shifting lever and tripping devices abovedescribed is such that the clutch member 22 may be shifted withcertainty to start and stop the ma chine and to permit the cam carryinggear 9 to be rotated independently of the clutch members 22 and 23, andit is also such that at the completion of a cycle of operations themachine will be stopped whether or not the starting lever 37 is keptdepressed by the operator. Fig. 3 shows the position of the parts withthe machine in stopped position. To start the machine the forward end oflever 39 is depressed by the operator, thereby disengaging latch 3i fromprojection 35 and permitting the spring 36 to move the clutch member 22into engagement with clutch member 23. The gear 9 is then driven fromthe shaft 16 through worm gear-'17 and clutch members 22 and 23, theshaft 6 and therefore gears 13 and 12 being stationary at this time.This movement of clutch member 22 and part 31 of the clutch shiftinglever moves the latch 3% out or engagement with trip dog 33 and theparts assume the position indicated in Fig. ti. It will be noted thatwhen latch is raised from projection 35 to disconnect the two members ofthe clutch shifting lever that clutch member will be moved intoengagement with clutch member 23 whether or not cam 29 is in engagementwith the clutch shifting lever. The machine can thus be started intooperation while the clutch shifting lever is still engaged by step cam29. Fig. 4 indicates the position of the parts after clutch member hasengaged clutch member 23 and while part of the clutch shifting lever isstill held raised by stop cam 29. As soon as stop cam 29 moves frombeneath part 32 of the clutch shifting lever this part drops to theposition indicated in Fig. 5, thereby causing the latch 31 to againengage projection 35 and lock the two members of the clutch shiftinglever together. Fig. 6 indicates the position of the parts while theclutch shifting lever is engaged by cam 30. The cam 30 is slightly lowerthan cam 29 and does not raise part 32 of the clutch shifting lever highenough to cause the latch 3 l to be engaged by trip dog 38. When,therefore, the cam 30 passes from beneath part 32 of the clutch shiftinglever the clutch member 22 can again be moved into engagement withclutch member 23. At the end of the cycle of operations cam 29 engagespart of the clutch shift ing lever and returns the parts to the positionindicated in Fig. 3. After the machine is started latch 3a is out ofengagement with trip dog 38 and the clutch shiftin g lever is operatedto shift member 22 into and out of engagement with clutch member 23 andfinally stop the machine independently of the trip dog and startinglever so that the machine will be stopped at the completion of a cycleof operations regardless of the position of the starting lever and themachine can only be started a second time by releasing the startinglever and depressing it again.

In the machine illustrated in the drawlilltl stopped with both the upperand lower needles in retracted, position. It is desirable that provisionbe made for permitting the mechanism for actuating the needles to bemoved slightly while the machine is at rest so as to bring one or bothneedles into a convenient position for threading. To enable theactuating mechanism for. the needles to be so moved without any dangerof permanently displacing the mechanism with relation to the othe'actuating mechanisms of the machine the locking plate 21 on the camcarrying gear 9 is cut away as indicated at d1 in Fig. 2. This forms arecess to receive the locking plate 20 when the parts are in stoppedposition and enables the sewing mechanism to be moved enough to give thedesired result. \Vhen the machine is started the sewing mechanism is atonce returned to its original position in case it has not been returnedto this position by the operator before starting the machine.

The nature and object of the present invention having been indicated anda construction embodying the several features of the invention in theirpreferred form having been specifically described, what is claimed is:

1. Driving and stopping mechanism for button hole sewing and othermachines, having in combination, a cam carrying actuating andcontrolling gear, a second gear, driving mechanism for rotating thecontrolling gear independently of the second gear, driving mechanism forrotating the second gear and controlling gear simultaneously, meanscontrolled by the controlling gear for throwing said driving mechanismsinto and out of operation acting to throw one mechanism out of operationas the other is thrown in, and connections between the controlling gearand the second gear for locking the second gear against displacementwhile its driving mechanism is thrown out.

2. Driving and stopping mechanism for button hole sewing and othermachines, having in combination, actuating and controlling mechanism, asecond actuating mechanism, driving mechanism for driving the actuatingand controlling mechanism independently of the second actuatingmechanism, driving mechanism for driving the second actuating mechanismand the actuating and controlling mechanism simultaneously, meanscontrolled by the controlling mechanism for throwing said drivingmechanisms into and out of operation acting to throw one mechanism outof operation as the other is thrown in, and connections between thecontrolling mechanism and the second actuating mechanism for locking thesecond actuating mechanism against displacement while its drivingmechanism is thrown out.

3. Driving and stopping mechanism for button hole sewing and othermachines, havmg 111 combination, an actuating gear provided with a blankspace extending over a portion of its periphery, a pinion engaging thegear during a portion of its rotation and registering with the blankspace during another portion of the rotation, a locking segment carriedby said pinion, a locking plate carried by said gear arranged to engagethe locking segment and lock the pinion against rotation while thepinion registers with the blank space, a second pinion meshing with saidgear, independent driving means for each pinion, and means for throwingsaid driving means into and out of operation acting to throw one drivingmeans out of operation as the other driving means is thrown intooperation.

4. Driving and stopping mechanism for button hole sewing and othermachines, having in combination, an actuating gear, driving mechanismtherefor comprising a clutch, a two part clutch shifting lever, a springacting on one part when disconnected from the second part to throw inthe clutch, a cam acting on the second part when the parts are connectedto throw out the clutch, a latch arranged to connect the parts whenthesecond part is released by the cam, and a trip for the latch.

5. Driving and stopping mechanism for button hole sewing and othermachines, having in combination, an actuating gear, driving mechanismtherefor comprising a clutch, a two part clutch shifting lever, a springacting on one part when disconnected from the second part to throw inthe clutch, a cam acting on the second part when the parts are connectedto throw out the clutch, a latch trip, and a latch arranged to move outof engagement with the trip when the clutch is thrown in and to connectthe parts of the lever when the second part is released by the cam.

EUGENE J. RAY.

\Vitnesscs:

C. M. SINGERBEAUX, CHARLES E. Gnnsn.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

7 Washington, D. G.

